/* ==========================================================================
   BIV Education LMS — Modern Design System & Stylesheet
   ========================================================================== */

:root {
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Brand Palette */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-dark: #1e3a8a;
  --primary-light: #eff6ff;
  --primary-gradient: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #06b6d4 100%);
  
  --secondary: #06b6d4;
  --accent: #f59e0b;
  --success: #10b981;
  --danger: #ef4444;
  --info: #3b82f6;

  /* Neutrals */
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.35);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Layout */
  --container-max: 1240px;
  --header-height: 76px;
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--primary-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Header & Navigation */
.site-header {
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 22px;
  color: #0f172a;
}

.logo-badge {
  background: var(--primary-gradient);
  color: white;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  color: #334155;
  font-weight: 600;
  font-size: 15px;
  padding: 8px 0;
  position: relative;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--primary);
}

.site-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: #1e293b;
}

.btn-outline:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: var(--primary);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

/* Hero Section */
.hero-section {
  padding: 70px 0 60px;
  background: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.07) 0%, rgba(248, 250, 252, 1) 90%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: var(--primary);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-badge i {
  color: #3b82f6;
}

.hero-title {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.2;
  color: #0f172a;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-title .gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 18px;
  color: #475569;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 36px;
  padding-top: 24px;
  border-top: 1px solid #e2e8f0;
}

.stat-item h4 {
  font-size: 26px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 2px;
}

.stat-item p {
  font-size: 13px;
  color: #64748b;
  font-weight: 600;
}

/* Hero Interactive Card / Simulation */
.hero-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-xl);
  position: relative;
}

.card-header-badge {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-light);
}

.status-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #ecfdf5;
  color: #065f46;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.status-live::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Feature Grid */
.features-section {
  padding: 80px 0;
  background: white;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}

.section-tag {
  color: var(--primary);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.section-subtitle {
  color: #64748b;
  font-size: 16px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.feature-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 30px;
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  position: relative;
}

.feature-box:hover {
  transform: translateY(-5px);
  border-color: #93c5fd;
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: #eff6ff;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.feature-box:hover .feature-icon {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.feature-box h3 {
  font-size: 19px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 10px;
}

.feature-box p {
  color: #64748b;
  font-size: 14.5px;
  line-height: 1.6;
}

/* Exams & Classes Showcase */
.showcase-section {
  padding: 80px 0;
  background: #f8fafc;
}

.exam-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 26px;
}

.exam-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.exam-card:hover {
  border-color: #93c5fd;
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.exam-card-top {
  padding: 24px;
  flex: 1;
}

.exam-subject-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: #e0f2fe;
  color: #0369a1;
  margin-bottom: 12px;
}

.exam-title {
  font-size: 18px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 12px;
  line-height: 1.4;
}

.exam-meta-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13.5px;
  color: #64748b;
}

.exam-meta-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.exam-meta-list li i {
  color: var(--primary);
  width: 16px;
}

.exam-card-footer {
  padding: 18px 24px;
  background: #f8fafc;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ==========================================================================
   ONLINE EXAM ROOM (OLM INTERFACE)
   ========================================================================== */

.exam-room-wrapper {
  background: #f1f5f9;
  min-height: calc(100vh - var(--header-height));
  padding: 24px 0 60px;
}

.exam-topbar {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.exam-info-head h2 {
  font-size: 20px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 4px;
}

.exam-info-head p {
  font-size: 13px;
  color: #64748b;
}

.exam-timer-box {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  padding: 8px 18px;
  border-radius: var(--radius-md);
}

.timer-icon {
  font-size: 22px;
  color: var(--primary);
  animation: timerRotate 2s infinite linear;
}

.timer-display {
  font-size: 22px;
  font-weight: 800;
  color: #1e3a8a;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

.exam-grid-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
  align-items: start;
}

.question-stage-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.question-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.q-badge {
  background: #f1f5f9;
  color: #1e293b;
  font-weight: 700;
  font-size: 14px;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
}

.auto-save-pill {
  font-size: 12px;
  color: #059669;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #ecfdf5;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.question-content {
  font-size: 17px;
  font-weight: 600;
  color: #1e293b;
  line-height: 1.7;
  margin-bottom: 28px;
}

.options-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  background: #ffffff;
}

.option-item:hover {
  border-color: #93c5fd;
  background: #f8fafc;
}

.option-item.selected {
  border-color: var(--primary);
  background: #eff6ff;
  box-shadow: 0 0 0 1px var(--primary);
}

.option-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid #cbd5e1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  color: #64748b;
  flex-shrink: 0;
  transition: all 0.2s;
}

.option-item.selected .option-circle {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.option-text {
  font-size: 15.5px;
  color: #1e293b;
  font-weight: 500;
}

.question-navigation-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

/* Exam Right Palette Sidebar */
.exam-palette-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 100px;
}

.palette-title {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 16px;
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-bottom: 24px;
}

.palette-btn {
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: #f8fafc;
  color: #475569;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.palette-btn:hover {
  border-color: #94a3b8;
}

.palette-btn.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.4);
}

.palette-btn.answered {
  background: #2563eb;
  color: white;
  border-color: #2563eb;
}

.palette-legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12.5px;
  color: #64748b;
  margin-bottom: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.dot-answered { background: #2563eb; }
.dot-unanswered { background: #f8fafc; border: 1px solid #cbd5e1; }
.dot-current { border: 2px solid #2563eb; background: white; }

.submit-exam-btn {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  font-weight: 700;
}

/* Modal Result Screen */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: white;
  width: 100%;
  max-width: 650px;
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-xl);
  text-align: center;
  transform: scale(0.95);
  transition: transform 0.3s ease;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-overlay.open .modal-box {
  transform: scale(1);
}

.score-badge-circle {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.35);
}

.score-badge-circle .score-num {
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
}

.score-badge-circle .score-max {
  font-size: 13px;
  opacity: 0.85;
}

.result-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0 28px;
}

.r-stat {
  background: #f8fafc;
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.r-stat-val {
  font-size: 20px;
  font-weight: 800;
  color: #0f172a;
}

.r-stat-label {
  font-size: 12px;
  color: #64748b;
  margin-top: 4px;
}

/* Footer */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 0 24px;
  margin-top: auto;
  border-top: 1px solid #1e293b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  color: white;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
  max-width: 360px;
}

.footer-col h4 {
  color: white;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  color: #94a3b8;
  font-size: 14px;
}

.footer-col ul li a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid #1e293b;
  font-size: 13.5px;
}

/* Responsive */
@media (max-width: 991px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .exam-grid-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .olm-hero-grid {
    grid-template-columns: 1fr !important;
  }
  .arena-teaser-banner {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 768px) {
  .site-nav {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-title, .olm-hero-title {
    font-size: 30px !important;
  }
}

/* ==========================================================================
   OLM.VN SPECIFIC STYLES & COMPONENTS
   ========================================================================== */

/* Top bar */
.top-nav-bar {
  background: #0f172a;
  color: #94a3b8;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid #1e293b;
}

.top-nav-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.top-nav-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-olm {
  background: #0284c7;
  color: white;
  font-weight: 800;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.top-nav-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.top-nav-right a {
  color: #cbd5e1;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.top-nav-right a:hover {
  color: #38bdf8;
}

/* OLM Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.olm-logo-icon {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: white;
  font-weight: 900;
  font-size: 17px;
  padding: 8px 12px;
  border-radius: 10px;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.35);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 20px;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.2;
}

.logo-sub {
  font-size: 11.5px;
  color: #0284c7;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* OLM Navigation Dropdown */
.nav-dropdown-wrapper {
  position: relative;
}

.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.caret-icon {
  font-size: 11px;
  transition: transform 0.2s;
}

.nav-dropdown-wrapper:hover .caret-icon {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(3, 160px);
  gap: 16px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.nav-dropdown-wrapper:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.dropdown-col h4 {
  font-size: 13.5px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid #e0f2fe;
}

.dropdown-col a {
  display: block;
  font-size: 13.5px;
  color: #475569;
  padding: 5px 8px;
  border-radius: 6px;
  transition: all 0.15s;
}

.dropdown-col a:hover {
  background: #f0f9ff;
  color: #0284c7;
  font-weight: 600;
}

/* OLM Hero Section */
.olm-hero {
  padding: 50px 0 60px;
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
  border-bottom: 1px solid #e0f2fe;
}

.olm-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.olm-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #e0f2fe;
  color: #0369a1;
  font-weight: 700;
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.olm-hero-title {
  font-size: 42px;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.highlight-olm {
  color: #0284c7;
}

.olm-hero-desc {
  font-size: 17px;
  color: #475569;
  line-height: 1.6;
  margin-bottom: 26px;
}

.olm-hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.btn-warning {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white !important;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.4);
}

/* Quick Grade Selectors */
.quick-grades-box {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.qg-title {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: #64748b;
  margin-bottom: 10px;
}

.qg-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.qg-btn {
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  color: #334155;
  transition: all 0.2s;
  text-decoration: none;
}

.qg-btn:hover {
  background: #0284c7;
  color: white;
  border-color: #0284c7;
}

.qg-thpt {
  background: #fef2f2;
  color: #dc2626;
  border-color: #fecaca;
}

.qg-thpt:hover {
  background: #dc2626;
  color: white;
  border-color: #dc2626;
}

/* Hero Right Interactive Card */
.olm-hero-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 26px;
  box-shadow: var(--shadow-xl);
}

.ohc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.live-dot-badge {
  background: #ecfdf5;
  color: #065f46;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.live-dot-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
}

.ohc-sub {
  font-size: 13px;
  font-weight: 700;
  color: #0284c7;
}

.ohc-question {
  font-size: 16.5px;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.5;
  margin-bottom: 18px;
}

.ohc-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.ohc-opt {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14.5px;
  background: #f8fafc;
}

.ohc-opt.selected {
  border-color: #0284c7;
  background: #f0f9ff;
  font-weight: 600;
  color: #0369a1;
}

.opt-label {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #cbd5e1;
  color: white;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ohc-opt.selected .opt-label {
  background: #0284c7;
}

.opt-check {
  margin-left: auto;
  color: #0284c7;
}

.ohc-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-light);
  padding-top: 14px;
}

.ohc-timer {
  font-size: 13px;
  color: #64748b;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* Grade Hub Section */
.grade-hub-section {
  padding: 70px 0;
  background: white;
}

.grade-levels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 26px;
}

.grade-category-box {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
}

.grade-category-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #93c5fd;
}

.cat-header {
  padding: 20px 24px;
  color: white;
  display: flex;
  align-items: center;
  gap: 12px;
}

.cat-header h3 {
  font-size: 18px;
  font-weight: 800;
  margin: 0;
}

.cat-header i {
  font-size: 22px;
}

.cat-primary { background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%); }
.cat-secondary { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }
.cat-accent { background: linear-gradient(135deg, #6366f1 0%, #4338ca 100%); }

.cat-body {
  padding: 24px;
}

.grade-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.grade-badge-row a {
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: #334155;
  text-decoration: none;
}

.grade-badge-row a:hover {
  background: #0284c7;
  color: white;
}

.cat-subjects {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14.5px;
  color: #334155;
}

.cat-subjects li {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Arena Teaser */
.arena-teaser-section {
  padding: 60px 0;
  background: #f8fafc;
}

.arena-teaser-banner {
  background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%);
  border-radius: var(--radius-xl);
  padding: 40px;
  color: white;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 36px;
  align-items: center;
  box-shadow: var(--shadow-xl);
}

.at-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid #f59e0b;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 14px;
}

.at-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.3;
}

.at-desc {
  font-size: 15px;
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 24px;
}

.at-card-mockup {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 22px;
  backdrop-filter: blur(10px);
}

.at-card-title {
  font-size: 14px;
  font-weight: 700;
  color: #fbbf24;
  margin-bottom: 12px;
}

.at-winner {
  display: flex;
  align-items: center;
  gap: 14px;
}

.winner-avatar {
  font-size: 32px;
}

.winner-name {
  font-size: 16px;
  font-weight: 700;
  color: white;
}

.winner-score {
  font-size: 13px;
  color: #38bdf8;
}

/* Forum Mini Cards */
.forum-teaser-section {
  padding: 60px 0;
  background: #f1f5f9;
}

.forum-mini-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}

.forum-mini-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #93c5fd;
}

/* ========================================================
   OLM AUTHENTICATION (REGISTER & LOGIN) STYLING
   ======================================================== */
.olm-auth-wrapper {
  min-height: calc(100vh - 160px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
  background: #f1f5f9;
}

.olm-auth-card {
  max-width: 1040px;
  width: 100%;
  min-height: 640px;
  display: grid;
  grid-template-columns: 440px 1fr;
  background: #ffffff;
  border-radius: 28px;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.15), 0 0 0 1px rgba(226, 232, 240, 0.8);
  overflow: hidden;
}

/* Left Brand & Illustration Banner */
.auth-left-banner {
  background: linear-gradient(145deg, #4f46e5 0%, #3b82f6 50%, #2563eb 100%);
  padding: 36px 30px;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.auth-left-banner::before {
  content: "";
  position: absolute;
  top: -60px;
  left: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.auth-banner-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: space-between;
  position: relative;
  z-index: 2;
}

.banner-brand {
  margin-bottom: 12px;
}

.banner-logo-icon {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.banner-svg-logo {
  width: 38px;
  height: 38px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.banner-logo-text {
  font-size: 34px;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: #ffffff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.banner-heading {
  margin-bottom: 20px;
}

.banner-sub {
  font-size: 19px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 2px;
}

.banner-title {
  font-size: 42px;
  font-weight: 900;
  letter-spacing: 1px;
  color: #ffffff;
  line-height: 1;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Illustration: Register */
.banner-illustration-area {
  position: relative;
  margin: 16px 0;
  text-align: center;
}

.floating-badge {
  position: absolute;
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  z-index: 3;
}

.cap-badge {
  top: 10px;
  right: 20px;
  width: 50px;
  height: 50px;
  font-size: 22px;
  color: #fbbf24;
  animation: floatBounce 3s ease-in-out infinite alternate;
}

.diploma-badge {
  top: 60px;
  right: 5px;
  width: 44px;
  height: 44px;
  font-size: 20px;
  color: #f59e0b;
  animation: floatBounce 2.5s ease-in-out infinite alternate-reverse;
}

@keyframes floatBounce {
  0% { transform: translateY(0); }
  100% { transform: translateY(-8px); }
}

.student-hero-visual {
  display: inline-block;
  position: relative;
}

.student-avatar-frame {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.7);
  overflow: hidden;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.2);
  margin: 0 auto;
}

.student-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumbsup-pill {
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  background: #ffffff;
  color: #0f172a;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
  white-space: nowrap;
}

.thumbsup-pill i {
  color: #2563eb;
  margin-right: 4px;
}

/* Collage: Login */
.banner-collage-grid {
  position: relative;
  height: 280px;
  margin: 15px 0;
}

.collage-card {
  position: absolute;
  border-radius: 18px;
  overflow: hidden;
  border: 3px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.18);
  background: white;
}

.card-boy {
  top: 10px;
  left: 10px;
  width: 135px;
  height: 135px;
  z-index: 2;
}

.card-teacher {
  top: 25px;
  right: 15px;
  width: 135px;
  height: 135px;
  z-index: 2;
}

.card-family {
  bottom: 10px;
  left: 35px;
  width: 200px;
  height: 120px;
  z-index: 3;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.collage-badge-million {
  position: absolute;
  top: 0px;
  right: 40px;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 12px;
  padding: 6px 12px;
  display: flex;
  flex-direction: column;
  z-index: 4;
}

.badge-num {
  font-size: 14px;
  font-weight: 800;
  color: #ffffff;
}

.badge-txt {
  font-size: 11px;
  color: #bae6fd;
}

.badge-icon {
  position: absolute;
  top: 6px;
  right: 8px;
  font-size: 12px;
  color: #38bdf8;
}

.collage-center-emblem {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.mini-olm-symbol {
  font-size: 12px;
  font-weight: 900;
  color: #2563eb;
}

.five-stars-pill {
  position: absolute;
  bottom: 6px;
  right: 8px;
  background: rgba(15, 23, 42, 0.6);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 10px;
  color: #fbbf24;
}

/* Support Hotline Pill */
.banner-support-pill {
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 13px;
  font-weight: 600;
  color: #ffffff;
}

.support-label {
  color: #cbd5e1;
  font-weight: 700;
}

.support-phone {
  color: #ffffff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color 0.15s;
}

.support-phone:hover {
  color: #fbbf24;
}

/* Right Form Panel */
.auth-right-panel {
  padding: 36px 44px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #ffffff;
}

.auth-top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.auth-nav-link {
  font-size: 14px;
  font-weight: 600;
  color: #475569;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s;
}

.auth-nav-link:hover {
  color: #2563eb;
}

.auth-title {
  font-size: 26px;
  font-weight: 800;
  color: #0f172a;
  text-align: center;
  margin-bottom: 22px;
}

/* Input Fields */
.auth-input-group {
  position: relative;
  margin-bottom: 14px;
}

.input-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: #64748b;
  font-size: 16px;
  pointer-events: none;
}

.auth-input {
  width: 100%;
  height: 48px;
  border-radius: 12px;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  padding: 0 46px 0 46px;
  font-size: 14.5px;
  color: #0f172a;
  transition: all 0.2s ease;
  outline: none;
  font-family: inherit;
}

.auth-input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.btn-toggle-pw {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #64748b;
  cursor: pointer;
  padding: 6px;
  font-size: 16px;
}

.btn-toggle-pw:hover {
  color: #0f172a;
}

.auth-options-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 6px 0 18px;
  font-size: 13.5px;
}

.remember-checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #475569;
  cursor: pointer;
  user-select: none;
}

.forgot-link {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
}

.forgot-link:hover {
  text-decoration: underline;
}

.auth-terms {
  font-size: 12.5px;
  color: #64748b;
  text-align: center;
  margin: 12px 0 16px;
  line-height: 1.5;
}

.auth-terms a {
  color: #2563eb;
  text-decoration: underline;
}

/* Orange Action Submit Button */
.btn-auth-submit {
  width: 100%;
  height: 48px;
  background: linear-gradient(180deg, #ff6a00 0%, #fa5a1e 100%);
  color: #ffffff;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(250, 90, 30, 0.35);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
}

.btn-auth-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(250, 90, 30, 0.45);
}

.btn-auth-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Divider */
.auth-divider {
  position: relative;
  text-align: center;
  margin: 18px 0;
}

.auth-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: #e2e8f0;
}

.auth-divider span {
  position: relative;
  background: #ffffff;
  padding: 0 16px;
  font-size: 13px;
  color: #94a3b8;
}

/* Social SSO */
.social-auth-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.btn-social-item {
  height: 44px;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: #334155;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-social-item:hover {
  background: #f8fafc;
  border-color: #94a3b8;
}

.csdl-badge {
  color: #ea580c;
  font-size: 15px;
}

/* Footer prompt */
.auth-footer-prompt {
  text-align: center;
  font-size: 14px;
  color: #475569;
}

.auth-switch-link {
  color: #2563eb;
  font-weight: 700;
  text-decoration: none;
  margin-left: 4px;
}

.auth-switch-link:hover {
  text-decoration: underline;
}

/* Alert Messages */
.auth-alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 13.5px;
  margin-bottom: 16px;
  text-align: center;
  line-height: 1.4;
  font-weight: 500;
}

.auth-alert.alert-danger {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
}

.auth-alert.alert-success {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #047857;
}

/* Logged-in State Card */
.auth-logged-in-notice {
  text-align: center;
  padding: 30px 10px;
}

.logged-avatar {
  font-size: 56px;
  color: #2563eb;
  margin-bottom: 16px;
}

.auth-logged-in-notice h3 {
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 8px;
}

.auth-logged-in-notice p {
  color: #475569;
  font-size: 15px;
}

.logged-actions {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.btn-switch-account {
  font-size: 13.5px;
  color: #dc2626;
  text-decoration: none;
  font-weight: 600;
  margin-top: 6px;
}

.btn-switch-account:hover {
  text-decoration: underline;
}

/* Header User Profile Styles */
.user-greeting {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.9);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.badge-register-btn {
  background: #ff7a00;
  color: #ffffff !important;
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: 700;
}

.logout-link {
  color: #f87171 !important;
}

/* Responsive Auth Card */
@media (max-width: 900px) {
  .olm-auth-card {
    grid-template-columns: 1fr;
    max-width: 520px;
  }

  .auth-left-banner {
    padding: 24px 20px;
  }

  .banner-illustration-area,
  .banner-collage-grid {
    display: none;
  }

  .auth-right-panel {
    padding: 28px 20px;
  }

  .social-auth-group {
    grid-template-columns: 1fr;
  }
}

/* Exam Auth Gate */
.exam-auth-gate-card {
  max-width: 680px;
  margin: 40px auto;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 44px 36px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.gate-icon-badge {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: #eff6ff;
  color: #2563eb;
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 8px 16px rgba(37, 99, 235, 0.12);
}

.gate-title {
  font-size: 24px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 12px;
  line-height: 1.3;
}

.gate-desc {
  font-size: 15px;
  color: #64748b;
  line-height: 1.6;
  margin-bottom: 24px;
}

.gate-exam-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 28px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: #475569;
}

.meta-item i {
  font-size: 18px;
  color: #2563eb;
  margin-bottom: 2px;
}

.meta-item strong {
  color: #0f172a;
}

.gate-action-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.btn-gate-login {
  background: linear-gradient(180deg, #ff6a00 0%, #fa5a1e 100%);
  color: #ffffff;
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(250, 90, 30, 0.35);
  transition: all 0.2s;
}

.btn-gate-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(250, 90, 30, 0.45);
}

.btn-gate-register {
  background: #ffffff;
  color: #2563eb;
  border: 1.5px solid #2563eb;
  padding: 13px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
}

.btn-gate-register:hover {
  background: #eff6ff;
}

.gate-hotline-note {
  font-size: 13px;
  color: #64748b;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}